Do you let your cats sleep in the room with you?

When Scotty said about one of their cats sleeping on her boyfriend's face, it reminded me of the bobcat my mother-in-law had as a pet. It would go to sleep at the foot of the bed and then in the night she would wake up unable to breath because the bobcat had curled up on her head. She finally had to lock him in another room for the night so she could sleep.
The bobcat was also potty trained. He would perch on the toilet seat and go. I often wondered if in the wild bobcats go in water to hide their tracks, so to speak. This cat was very friendly and enjoyed being held and petted just like a normal housecat.